Contents
1 Introduction ............................................................................................................................................... 1
2 Quick Connect Guide.................................................................................................................................. 2
2.1 Available Headers ............................................................................................................................... 2
2.2 Standard Module ................................................................................................................................ 3
Recommended Parts ............................................................................................................................. 3
Serial Connections................................................................................................................................. 3
I
2
C Connections ..................................................................................................................................... 4
3 Software ..................................................................................................................................................... 5
3.1 uProject ............................................................................................................................................... 5
3.2 Application Notes................................................................................................................................ 6
4 Hardware.................................................................................................................................................... 7
4.1 Standard Model .................................................................................................................................. 7
Communication/Power Header ............................................................................................................ 7
Alternate Serial Header......................................................................................................................... 7
Protocol Select Jumpers ........................................................................................................................ 7
4.2 Common Features ............................................................................................................................... 8
General Purpose Outputs ..................................................................................................................... 8
5 Troubleshooting ......................................................................................................................................... 9
5.1 Power .................................................................................................................................................. 9
5.2 Display ................................................................................................................................................. 9
5.3 Communication ................................................................................................................................. 10
5.4 Manual Override ............................................................................................................................... 10
6 Commands ............................................................................................................................................... 11
6.1 Communication ................................................................................................................................. 11
6.2 Text.................................................................................................................................................... 12
6.3 Special Characters ............................................................................................................................. 14
6.4 General Purpose Output ................................................................................................................... 16
6.5 Display Functions .............................................................................................................................. 17
6.6 Data Security ..................................................................................................................................... 18
6.7 Miscellaneous ................................................................................................................................... 19
7 Appendix .................................................................................................................................................. 20
7.1 Command Summary ......................................................................................................................... 20
7.2 Character Sets ................................................................................................................................... 22
7.3 Block Diagram ................................................................................................................................... 24
7.4 Environmental Specifications............................................................................................................ 24
7.5 Electrical Tolerances ......................................................................................................................... 24
7.6 Dimensional Drawings ...................................................................................................................... 25
7.7 Optical Characteristics ...................................................................................................................... 25
8 Ordering ................................................................................................................................................... 26
8.1 Part Numbering Scheme ................................................................................................................... 26
8.2 Options .............................................................................................................................................. 26
8.3 Accessories ........................................................................................................................................ 26
9 Definitions ................................................................................................................................................ 27
10 Contact ................................................................................................................................................... 27
1 Introduction
Figure 1: LCD0821 Display
The LCD0821 is an intelligent alphanumeric liquid crystal display designed to decrease development
time by providing an instant solution to any project. . RS232, TTL and I2C protocols communication
options allow the LCD0821 to be connected to a wide variety of host controllers. Communication
speeds of up to 115.2kbps for serial protocols and 100kbps for I
2
C ensure lightning fast display updates.
The simple command structure permits easy software control of many settings including backlight
brightness, screen contrast, and baud rate. On board memory provides up to forty custom characters
which can be saved within the unit and recalled for start screens, bar graphs or larger numbers. Finally,
one general purpose outputs provide simple switchable five volt sources.
The versatile LCD0821, with all the features mentioned above, is available in a variety of colour, voltage,
and temperature options to suit almost any application.
1
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